v3.19.3.a.u2
SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - Notes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Condensed consolidating balance sheet        
Shareholders' equity $ 137.7 $ 192.4 $ 196.8 $ 285.9
Stockholders' Equity Attributable to Parent (45.0) (6.9)    
Deficit of earnings of equity method investments, net of distributions (62.5) (18.4) (102.1)  
Reportable Legal Entities | APC        
Condensed consolidating balance sheet        
Stockholders' Equity Attributable to Parent (45.0) (6.9)    
Deficit of earnings of equity method investments, net of distributions 0.0 0.0 0.0  
Cash dividends received by parent 68.5 $ 39.0 $ 67.9  
Reportable Legal Entities | APLP Holdings        
Condensed consolidating balance sheet        
Shareholders' equity 4.9      
Restricted net assets $ 5.3